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Likurg_2 [28]
3 years ago
15

What occurs when water in a river or stream transports tiny rock particles or sediment downstream. it also happens when these tr

ansported particles grind away the rock and when water dissolves chemical elements in the rock?
Chemistry
1 answer:
sergeinik [125]3 years ago
6 0
This is called the surface runoff. It is part of the water cycle when the water from the mountains flow down to the rivers and empty out to the seas and oceans. Or it could also flow down through the soil. As it flows, it carries nutrients like nitrogen and sulfides, so that's why the oceans are salty because of surface water runoff.
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The pH of a solution is 8.83±0.048.83±0.04 . What is the concentration of H+H+ in the solution and its absolute uncertainty?
slava [35]

Answer:

The concentration of H^{+} is 1.48  × 10^{-9} M

The absolute uncertainty of [{H^{+}] is ±0.12 × 10^{-9} M

The concentration of H^{+} is written as 1.48(±0.12) × 10^{-9} M

Explanation:

The pH of a solution is given by the formula below

pH = -log_{10}[{H^{+}]

∴ [H^{+}] = 10^{-pH}

where [{H^{+}] is the H^{+} concentration

From the question,

pH = 8.83±0.04

That is,

pH =8.83 and the uncertainty is ±0.04

First, we will determine [{H^{+}] from

[H^{+}] = 10^{-pH}

[{H^{+}] = 10^{-8.83}

[{H^{+}] = 1.4791 × 10^{-9} M

[{H^{+}] = 1.48 × 10^{-9} M

The concentration of H^{+} is 1.48  × 10^{-9} M

The uncertainty of [{H^{+}]  ( U_{[H^{+}] } ) from the equation [H^{+}] = 10^{-pH} is

U_{[H^{+}] } = 2.303 \\ × {[H^{+}] } × U_{pH }

Where U_{[H^{+}] } is the uncertainty of [{H^{+}]

U_{pH } is the uncertainty of the pH

Hence,

U_{[H^{+}] } = 2.303 × 1.4791 × 10^{-9} × 0.04

U_{[H^{+}] } = 1.36 × 10^{-10} M

U_{[H^{+}] } = 0.12 × 10^{-9} M

Hence, the absolute uncertainty of [{H^{+}] is ±0.12 × 10^{-9} M

6 0
4 years ago
When a metal and a non-metal react, the ____ tends to lose electrons and the ____ tends to gain electrons?
valentina_108 [34]
<span>When a metal and a non-metal react, the metal tends to lose electrons and the non metal tends to gain electrons?</span>
8 0
3 years ago
What attractive force pulls electrons toward protons to form chemical bonds?
ehidna [41]

Answer:

C). Electronegativity.

Explanation:

'Electronegativity' is described as the tendency or a measure of the ability of an atom or molecule to attract electrons that leads to the formation of chemical bonds. It is denoted by 'χ', a Greek letter. The elements like Fluorine having a very high rate of electronegativity, its atom would attract the electrons more strongly while the elements with lesser electronegativity like Cesium would possess a lesser tendency to attract electrons towards it in order to form a bond. Thus, <u>option C</u> is the correct answer.

6 0
3 years ago
What is the valence of Hydrogen, Oxygen, Nitrogen, Chlorine, Carbon and Silicon
-Dominant- [34]
They are all substances
3 0
3 years ago
Read 2 more answers
PLSS HELP I GIVE BRAINLIEST
STatiana [176]
What the first person said lol
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